I would be hard to do since they have a scheduled time for all the dock workers to be there, and the pilot captain, etc. We've been to St. Thomas 6 times now, and that is our port when we sleep in, don't do any excursions, and just mooch around on the ship day, although we always get off the ship for a couple of hours and just wander. You can only do Coral World and such so many times, and it is a bit of a disappointment compared to the major Aquatic parks.